1·The influence of methamidophos and acetochlor on the amounts and activity of methanogens in the soil of rice-duck complex ecosystem of wetland.
甲胺磷和乙草胺对稻-鸭复合系统土壤中甲烷细菌数量及其活性影响的研究。
2·The best formula of 40% acetochlor emulsion in water was ascertained and its particle size was measured. The cold and hot storage stability of the preparation were also studied.
本文通过实验确定了40% 乙草胺水乳剂的最佳配方，并对其粒径进行了测定，研究了其冷、热贮稳定性。